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Finding the Fourth Proportional to 608,884.78, 840,262.64 and 336,971.43

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Solution

The fourth proportional to 608,884.78, 840,262.64 and 336,971.43 is: 465,021.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,884.78 : 840,262.64 = 336,971.43 : x
  2. Step 2: Convert to fraction form
    608,884.78/840,262.64 = 336,971.43/x
  3. Step 3: Cross multiply
    608,884.78x = 840,262.64 × 336,971.43
  4. Step 4: Simplify right side
    608,884.78x = 283,144,499,328.28
  5. Step 5: Solve for x
    x = 283,144,499,328.28/608,884.78
  6. Step 6: Final answer
    x = 465,021.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.